Robert V. F. Janssens
(630) 252-8426 |
|
Education
B.Sc. Physics | Catholic University of Louvain, Belgium | 1969-1973 |
Ph.D. Nuclear Physics | Catholic University of Louvain "Contribution to the Nuclear Spectroscopy of Erbium Isotopes" |
1973-1978 |
Career
Research Associate | Kernphysisch Versneller Instituut (KVI), University of Groningen, The Netherlands |
1978-1980 |
Physics Professor | E.R.C. (Military Academy), Brussels, Belgium | 1980-1981 |
Assistant Scientist | Physics Division, Argonne National Laboratory | 1981-1984 |
Scientist | Physics Division, Argonne National Laboratory | 1984-1993 |
Senior Scientist | Physics Division, Argonne National Laboratory | 1993-present |
Chief | Low Energy Nuclear Physics group | 1994-2000 |
Scientific Director | ATLAS facility, & Associate Division Director | 2000-2011 |
Adjunct Professor | Michigan State University | 2001-present |
Adjunct Professor | University of Notre Dame | 2004-present |
Director | Physics Division | 2008-2017 |
Research Interests
My main research interests lie in the study of nuclear structure at the limits of stability, in high-Z nuclei and in neutron-rich nuclei. Most recently, we have initiated a program to investigate shell structure in neutron-rich nuclei just above 48Ca by combining a number of techniques and facilities. Our approach is one where we combine beta decay and intermediate-energy Coulomb excitation measurements performed at the NSCL with deep inelastic reactions or fusion-evaporation with radioactive targets carried out with Gammasphere at ATLAS. Another program at ATLAS uses Gammasphere to carry out so-called "unsafe" Coulomb excitation experiments on long-lived actinide nuclei in order to determine the important degrees of freedom responsible for the various excitations as a function of spin. I am also fascinated by the impact of structure on nuclear astrophysics processes and am participating in measurements in this area.
Over the years, I have supervised a number of graduate students who were based at ANL for their thesis research: D. Ye (U. Notre Dame, 1991), A.J.M. Plompen (Free U. Amsterdam, 1992), I.G. Bearden (Purdue U., 1993), D. Nisius (Purdue U., 1996), H. Amro (North Carolina State U., 1999), L.T. Brown (Vanderbilt U., 1999), K. Abu Saleem (Illinois Institute of Technology, 2002), X. Wang (U. Notre Dame, on-going).
Recent Publications
“STRENGTH OF OCTUPOLE CORRELATIONS IN THE ACTINIDES: CONTRASTING BEHAVIOR IN THE ISOTONES 237U AND 239Pu”,
S. Zhu, R. V. F. Janssens, et al., Phys. Lett. B 618, 51 (2005)
“ELUSIVE MAGIC NUMBERS”,
Robert V. F. Janssens, Nature 435, 897 (2005)
“YRAST STRUCTURE OF NEUTRON--RICH 53Ti NUCLEUS”,
B. Fornal, S. Zhu, R. V. F. Janssens, et al., Phys. Rev. C 72, 044315 (2005)
“PHYSICS OF A RARE ISOTOPE ACCELERATOR”,
D. F. Geesaman, C. K. Gelbke, R. V. F. Janssens, and B. M. Sherrill, Annu. Rev. Nucl. Part. Sci. 56, 53 (2006)
“SPECTROSCOPY OF THE ODD-ODD fp-SHELL NUCLEUS 52Sc FROM SECONDARY FRAGMENTATION”,
A. Gade, R. V. F. Janssens,et al., Phys. Rev. C 73, 037309 (2006)
“CROSS-SHELL EXCITATION IN TWO-PROTON KNOCKOUT: STRUCTURE OF 52Ca”,
A. Gade, R. V. F. Janssens, et al., Phys. Rev. C 74, 0211302(R) (2006)
“ONE-NEUTRON KNOCKOUT IN THE VICINITY OF THE N = 32 SUB-SHELL CLOSURE: 9Be(57Cr,56Cr +g)X”,
A. Gade, R. V. F. Janssens, et al., Phys. Rev. C 74, 047302 (2006)
“LEVEL STRUCTURE OF THE NEUTRON-RICH 56,58,60Cr ISOTOPES: SINGLE-PARTICLE AND COLLECTIVE ASPECTS”,
S. Zhu, A. N. Deacon, S. J. Freeman, R. V. F. Janssens, et al., Phys. Rev. C 74, 064315 (2006)
“YRAST STRUCTURE OF 64Fe”
N. Hoteling, W. B. Walters, R. V. F. Janssens, et al., Phys. Rev. C 74, 064313 (2006)
“ONE-PARTICLE EXCITATIONS OUTSIDE THE 54Ti SEMI-MAGIC CORE: THE 55V AND 55Ti YRAST STRUCTURES”
S. Zhu, R. V. F. Janssens, et al., Phys. Lett. B 650, 135 (2007)
“ YRAST STRUCTURE OF THE NEUTRON-RICH N = 31 ISOTONES 51Ca AND 52Sc”
B. Fornal, R. V. F. Janssens, et al., Phys. Rev. C 77, 014304 (2008)
”ROTATION-ALIGNED COUPLING IN 61Fe”
N. Hoteling, W. B. Walters, R. V. F. Janssens, et al., Phys. Rev. C 77, 044314 (2008)